diff --git a/jenkins.sh b/jenkins.sh
index 9e33585f8..dbd355c74 100755
--- a/jenkins.sh
+++ b/jenkins.sh
@@ -24,7 +24,7 @@ _EOF_
 
 # $PIP_BIN install --upgrade 'pip<8'
 $PIP_BIN install --upgrade setuptools
-$PIP_BIN install --upgrade pytest WebTest mock pytest-cov pyquery pytest-django
+$PIP_BIN install --upgrade 'pytest<4.1' WebTest mock pytest-cov pyquery pytest-django
 $PIP_BIN install --upgrade 'pylint<1.8' # 1.8 broken (cf build #3023)
 $PIP_BIN install --upgrade 'Django==1.8' 'gadjo' 'django-ckeditor<4.5.3'
 
diff --git a/tox.ini b/tox.ini
index ec4fab7c0..1f4e794cd 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,7 @@ passenv =
 deps =
     django18: django>=1.8,<1.9
     django111: django>=1.11,<1.12
-    pytest>=3.3.0
+    pytest>=3.3.0,<4.1
     pytest-mock
     pytest-cov
     WebTest